Buggy code:
public class ViewController implements Renderable , ActionListener { ViewController ( JFrame frame ) { } private JFrame frame ; private ComponentManager buffer ; private ComponentManager delBuffer ; private DialogFrame dialog ; private ConfirmRemovingDialog confirmDialog ; private DatabaseMediator mediator ; private int statement = 16 ; protected static final int ST_NEW_IN = 2 ; protected static final int ST_NEW_EX = 4 ; protected static final int ST_NEW_WA = 8 ; protected static final int ST_EDIT = 16 ; protected static final int ST_DEL = 32 ; private final String NO_NAME = "Áåçûìÿííûé" ; private final ComponentOrientation categoryOrientation = ComponentOrientation . RIGHT_TO_LEFT ; private final ComponentOrientation walletOrientation = ComponentOrientation . LEFT_TO_RIGHT ; public void addWallets ( Collection < WalletImpl > wallets ) { } public void addIncome ( Collection < WalletImpl > income ) { } public void addExpense ( Collection < WalletImpl > expense ) { } public List < ComponentManager > getWallets ( ) { } public List < ComponentManager > getIncome ( ) { } public List < ComponentManager > getExpense ( ) { } private void initialize ( ) { } @ Override public void render ( ) { } private List < ComponentManager > income = new ArrayList < ComponentManager > ( ) ; private List < ComponentManager > expense = new ArrayList < ComponentManager > ( ) ; private final String addIncomeName = "Äîáàâèòü<seq2seq4repair_space>äîõîä" ; private final String addExpenseName = "Äîáàâèòü<seq2seq4repair_space>ðàñõîä" ; private final String addWalletName = "Äîáàâèòü<seq2seq4repair_space>êîøåëåê" ; private List < ComponentManager > wallets = new ArrayList < ComponentManager > ( ) ; private JButton addIncome = new JButton ( addIncomeName ) ; private JButton addExpense = new JButton ( addExpenseName ) ; private JButton addWallet = new JButton ( addWalletName ) ; private final Color inColor = Color . GREEN ; private final Color exColor = new Color ( 255 , 102 , 51 ) ; private final Color waColor = null ; private final Rectangle categoryRect = new Rectangle ( 10 , 100 , 140 , 55 ) ; private final int CATEGORY_RANGE = 5 ; private final Rectangle walletRect = new Rectangle ( 10 , 30 , 130 , 60 ) ; private final int WALLET_RANGE = 20 ; private Rectangle getInRect ( ) { } private Rectangle getExRect ( ) { } private Rectangle getWaRect ( ) { } private void createList ( Collection < WalletImpl > src , List < ComponentManager > dest , Color color , Rectangle rect , ComponentOrientation orientation ) { } public int getCurrentAmountInAllWallets ( ) { } public void updateTitle ( ) { } public ComponentManager create ( WalletImpl wi , Color color , Rectangle rect , ComponentOrientation orientation ) { } @ Override public void actionPerformed ( ActionEvent arg0 ) { } private void openDialog ( ComponentManager cm ) { } private void openConfirmDialog ( ComponentManager cm ) { } private void clearBuffer ( ) { } private void clearDelBuffer ( ) { } private void addComponent ( ComponentManager cm , List < ComponentManager > list , ComponentOrientation orientation ) { } private void fill ( ComponentManager unknown , DialogFrame frame ) { int amount = Integer . parseInt ( frame . textMonetary . getText ( ) ) ; Monetary monetary = unknown . getWallet ( ) . getAmount ( ) ; String text = frame . textName . getText ( ) ; <START_BUG> unknown . setName ( text ) ; <END_BUG> unknown . button . setText ( text ) ; monetary . set ( amount ) ; unknown . field . setText ( monetary . toString ( ) ) ; if ( ( statement ) == ( ViewController . ST_NEW_EX ) ) { addComponent ( unknown , expense , categoryOrientation ) ; } else if ( ( statement ) == ( ViewController . ST_NEW_IN ) ) { addComponent ( unknown , income , categoryOrientation ) ; } else if ( ( statement ) == ( ViewController . ST_NEW_WA ) ) { addComponent ( unknown , wallets , walletOrientation ) ; } mediator . appendOrEdit ( unknown , statement ) ; } private void ifDeleteOrEditPressed ( Object unknown , List < ComponentManager > list ) { } private void ifConfirmDialogsActionHappened ( Object unknown , ConfirmRemovingDialog obj ) { } private void ifDialogsActionHappened ( Object unknown , DialogFrame obj ) { } private void ifAddedButtonPressed ( Object unknown ) { } private void newComponentDialog ( int statement , Color color ) { } private void delete ( Container content , List < Component > components ) { } }

Fix:
unknown . wallet . setName ( text ) ;